关于被动语态的问题a truck is running over a bag,变成被动语态,答案写的是a bag is being run over by a truck,为什么不是a bag is running over by a truck上面说错了,为什么不是a bag being run over by a truck?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/31 05:06:33
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